Projecting machine



Sept. 24, 1929. E. E. WAGNER PROJECTING MACHINE 5 Sheets-Sheet 1 Fil y 15. 1925 Sept. 24, 1929.

E. E. WAGNER PROJECTING MACHINE 5 Sheets-Sheet 2 Fil y 15. 1925 4 ATTORNEY p 1929- E. E. WAGNER 1,729,304

PROJECTING MACHINE Filed y 15, 1925 5 Sheets-Sheet 3 INVENTOR ATTO RNEY Sept. 24, 1929.

E. E. WAGNER PROJECTING MACHINE Fil ly 15, 1925 5 Sheets-Sheet 4 323%yzzer INVENTOR ATTORNEY Sept. 24, 1929. E. E. WAGNER PROJECTING MACHINE Filed July 15, 1925 5 Sheets-Sheet 5 ZZZ/ay/wr ATTORN EY Patented Sept. 24, 1929 PATENT OFFICE EMANUEL E. WAGNER, OF LAMAR, MISSOURI PROJECTING MACHINE Application filed July 15,

This invention relates to machines for displaying slides, such as lantern slides and the like and is especially designed for use in motion picture theaters for projecting advertis- 5 ing matter and other amusements or information upon a screen, or the like.

Another object of the invention is the pro vision of a machine for this purpose, by means of which the slides will be automatically displayed and arranged in the order of their display for reuse, means being provided for stopping the operation of the machine and extinguishing the lamp as soon as the last slide has been shown, so that the machine may be operated and the matter displayed without requiring the attention of a special attendant.

Another object of the invention is the provision of a projecting machine which, in ad- 20 dition to the above and other advantages, is simple in construction, reliable in use and by means of which slides may be displayed at regular intervals with only a very short period of time intervening between each slide.

\Vith the above and other objects in view, the invention further includes the following novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings Figure 1 is a side elevation of a machine constructed in accordance with the invention with a portion of the lamp houses illustrated by dotted lines.

Figure 2 is: a rear view of the same.

Figure 3 is a ,top plan view.

Figure 4 is a section taken substantially on the line 4-4 of Figure 2 with parts of the mechanism removed.

Figure 5 is a section taken substantially on the line 5-5 of Figure 6.

Figure 6 is a similar view on the line 66 of Figure 4.

1925. Serial NO. 43,821.

Figure 7 is a section taken substantially on the line 7 7 of Figure 4.

Figure 8 is a section on the line 88 of Figure 7, illustrating a portion of the slide carriage with the dummy slide in place.

Figure 9 is an enlarged section taken substantially on the line 99 of Figure 2.

Figure 10 is a fragmentary elevation illustrating the connection between the shutter arm and the slide operating mechanism, a portion of the latter being illustrated in section.

Referring to the drawings in detail wherein like characters of reference denote corresponding parts, the reference character 15 illustrates the frame of the machine while 16 indicates upper and lower panels carried by said frame. It may be here stated, that if desired, the machine may be enclosed in a suitable casing, but this is not essential and the casing has not been illustrated.

The frame rises from a base 17 and is secured thereto in any suitable manner.

Extending through openings 18 provided in each of the panels 16 is a magazine which includes a channeled member or guide 19, the latter being mounted for pivotal movement as shown at 20. This channeled member is inclined and receives a slide carriage 21, the latter being mounted upon wheels or rollers 22 and movable by gravity due to the Weight of the slides and the inclination of the channeled member. The degree of inclination of the channeled member is regulated by an arm 23 which is adjustablv secured to the panel 16 by means of a thumb nut 24 as illustrated in Figure 7 of the drawings. By moving this arm 23 longitudinally, the channeled member may be tilted to the desired degree.

The carriage 21 is adapted to contain a number of slides indicated at 25. These slides are adapted to be positioned between one face of the panel and a dummy slide 26 which is detachably secured to the end Wall 27 of the carriage. This end wall is provided with a slot 28 through which passes a spring tongue 29, the latter being secured to the dummy slide 26 and engaging the opposite face of the end wall 27 as shown in Figure 8 of the drawings. The carriage 21 is provided along one edge with a flange 30 to prevent movement of the slides in one direction, while the opposite edge of the carriage is free so that the slides may move laterally with respect to the carriage.

Slidingly mounted along the face of each of the panels 16 is a plate 31 whose inner end is reduced in thickness to provide a shoulder 32 and a tongue 33, the latter being adapted to be positioned between the innermost slide 25 and the adjacent face of the panel 16 so that the edge of the innermost slide will rest against the shoulder 32, as shown in Figure 4 of the drawings.

Inward movement of the plate 31 will thus force the innermost slide 25 horizontally out of the carriage along spaced upper and lower guide bars 34 and into position between a projecting lens 35 and a suitable source of light contained within a lamp house 36. The light preferably consists of an electric bulb indicated by the dotted lines at 37 in Figure 3 of the drawings.

The construction just; described is duplicated for each of the panels 16 and the plates 31 of the upper and lower panels are alternately operated. For this purpose there is provided a lever 38 which is pivotally mounted as at 39 upon the frame 15 and which has a sliding pivotal connection 40 with, each of the plates 31, connection with the plates being effected through a substantially L-shaped slide rod 41. The rods 41 are movable in guides 42 and 43 carried by the panels 16 and these guides may if desired be provided with anti-friction rollers 44. The lever 38 is pivotally connected to one end of a rod 42 and the opposite end of this rod has a pivotal connection with a crank arm 43 which is mounted upon one end of a shaft 44 rotatable in the frame 15. This shaft has mounted thereon a worm gear 45 which is frictionally secured to the shaft by means of a friction plate 46 and a spring 47. so that the gear will ordinarily rotate with the shaft but the latter may move independently thereof when desired. The gear 45 is operated by a worm 48 which is mounted upon a shaft 49 and the latter has secured thereon a pulley 50 which may be driven by a belt 51 from any suitable source of power, preferably an electric motor.

The parts are so arranged that when the lever 38 is rocked by the mechanism just described, the plates 31 will alternately move inward a suflicient distance to position a slide between the lamp 37 and the lens 35, return movement of the plate leaving the slide in display position. The next inward movement of the plate will move the following slide laterally so as to engage the edge of the displayed slide, whereupon this displayed slide will be further moved into position in front of an opening 52 provided in each of the panels 16.

Arranged behind the openings 52 of the panels are receiving trays 53 and the lower edges of the openings at these points being rounded or inclined as shown at 54 in Figure 5 of the drawings so that the slides may move inward through these openings into the trays 53. This movement is accomplished by means of pusher plates 55 which are hingedly mounted as at 56 and have their free ends normally inclined outward by means of springs 57. \Vhen the displayed slides reach a position in front of the openings 52, outward movement of the plates 31 will cause the pusher plates 55 to engage the outer faces of the slides and push the latter through the openings into the receiving trays 53. This movement of the pusher plates is effected by means of rods 58 which have one of their ends pivotally mounted as shown at 59 upon the panels 16 and their opposite ends extending through slots provided in the slide bars 41. These rods engage inclined flanges 60 which extend from the pusher plates 55 as shown in Figures 2 and 4 of the drawings.

lt will be thus apparent that after the first slide has been shown, the subsequent slides moving into display position will move the displayed slides into position to be acted upon by the pusher plates 55 so that the said displayed slides will be stacked in consecutive order within the, receiving trays 53. The stacked slides within the trays 53 will be pushed against weights 61 which are slidable in said trays and will be prevented from falling in a d rection toward the openings 52 by means of pivotally mounted dogs 62 which engage the last plate entering the trays.

The dummy slide 26 which follows the last slide 25, carries a lug or stud 63. This dummy slide is utilized to push the last displayed slide into position to be acted upon by the pusher plate 55 so that the last displayed slide may be placed within its tray As the last slide to be displayed is arranged within the lower magazine 19 itis only necessary to provide the dummy slide of this magazine with a stud 63. Arranged in the path of movement of the stud 63 is a pivotally mounted lever 64. 7

end of this lever while the lower end of said lever is adapted to engage the handle 65 of a switch or circuit closer 66. by means of which current to the motor (not shown) and lamp is controlled. The switch is frictionally held in closed position against the action of a spring 67 and when the lever 64 moves to operate the switch arm' and open the switch, the tension of this spring causes a quick opening movement. A stop 68 arranged in the path The stud 63 engages the upper 1 of the switch arm acts to limit opening movement of the switch.

A lens 35 is provided for each set of slides and these lenses are mounted in a suitable support 69 rising from the base 17. Each lens is provided with a shutter 70 arranged to be positioned in front of the lens during the movement of the slides. The shutters 70 are carried by a shutter arm 71, the latter being pivotally mounted as at 72 and arranged so that pivotal movement in opposite directions will alternately position one of the shutters before one of the lenses 35. The arrangement of the shutter arm and shutters is illustrated in Figure 3. The inner end of the shutter arm 71 has secured thereto spaced spring arms 73 which frictionally engage the opposite edges of the upper slide bar 41 so that a yielding engagement between the shutter arm and this slide bar is provided. Tension of the spring arms 73 is regulated by means of a bolt 74.

It will be apparent from the foregoing de scription and accompanying drawings that the slides may be arranged in the order of their display within the carriages of the magazines and the switch closed to light the lamps and start the motor. The slides will then be consecutively displayed with the upper and lower slides alternating, the shutters 70 being alternately displayed before the lenses 35 so as to cover the interval of time necessary to change the slides. After display, the slides will be stacked in their regular order within the trays 53 and when the last slide has been displayed, the switch 66 will be automatically opened to stop the operation of the machine and extinguish the lamps. The carriages of the magazines may be again reloaded and operation of the machine resumed by closing the switch. The machine may thus be operated without requiring a special attendant, the operator of the usual moving picture machine in a theater having only to transfer the slides from the receiving trays to the magazines and close the switch.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the appended claims.

Having described the invention what is claimed is 1- 1. A projecting machine comprising a frame, a magazine supported thereby and adapted to contain a plurality of display slides, a lens for the magazine, a lamp for the magazine, means to move the slides of the magazine singly into display position between the lens and lamp and permit the slides to remain in such position for an appreciable period, means whereby movement of subsequent slides will move the displayed slides out of position, a dummy slide to move the last displayed slide, a receiving tray, means to transfer the displayed slides to said tray, means to operate the machine and means operated by the dummy slide after the display of the last slide to machine.

2. A projecting machine comprising a frame, a magazine supported thereby and adapted to contain a plurality of display slides, a lens for the magazine, a lamp for the magazine, means to move the slides of the magazine singly into display position between the lens and lamp and permit the slides to remain in such position for an appreciable period, a gravity operated wheel supported carriage included in the magazine for moving the slides into position to be acted upon by the slide moving means, means whereby movement of subsequent slides will move the displayed slides out of position, a receiving tray and means to transfer the displayed slides to said tray.

3. A projecting machine comprising a frame, a magazine supported thereby and adapted to contain a plurality of display slides, a lens for the magazine, a lamp for the magazine, means to move the slides of the magazine singly into display position between the lens and lamp and permit the slides to remain in such position for an appreciable period, a carriage movable within the magazine for moving the slides into position to be acted upon by the slide moving means, means to adjust the magazine to regulate operation of the carriage, means whereby movement of subsequent slides will move the displayed slides out of position, a receiving tray and means to transfer the displayed slides to said tray.

4. A projecting machine comprising a frame, a pivotally mounted magazine supported thereby and adapted to contain a plurality of display slides, a lens for the magazine, a lamp for the magazine, means to move the slides of the magazine singly into display position between the lens and lamp and permit the slides to remain in such position for an appreciable period, a carriage movable within the magazine for moving the slides into position to be acted upon by the slide moving means, means to adjust the pivotal position of the magazine to regulate movement of the carriage, means whereby movement of subsequent slides will move the displayed slides out of position, a receiving tray and means to transfer the displayed slides to said tray.

5. A projecting machine comprising a frame, spaced magazines supported thereby and adapted to contain a plurality of display slides, a lens for each magazine, a lamp for each magazine, push plates singly engaging the slides, means operatively associating the plates to move the latter alternately, electric means to operate the plate moving means,

stop the operation of the whereby the slides will be moved singly into display fiosition, shutters adapted to be moved into and out of position before the lenses, means associating the shutters and slide moving means to alternately position the shutters before the lenses, means to move the displayed slides out of position, receiving trays, and means to transfer the displayed slides to said trays.

6. A projecting machine comprising a frame, spaced magazines supported thereby and adapted to contain a plurality of display slides, a lens for each magazine, a lamp for each magazine, push plates singly engaging the slides, means operatively associating the plates to move the latter alternately, electric means to operate the plate moving means, whereby the slides will bemoved singly into display position, shutters adapted to be moved into and out of position before the lenses, means associating the shutters and slide moving means to alternately position the shutters before the lenses, means to move the displayed slides out of position, receiving trays, and means controlled by the slide moving means to transfer the displayed slides to said trays.

7. A projecting machine comprising a frame, spaced magazines supported thereby and adapted to contain a plurality of display slides, a lens for each magazine, a lamp for each magazine, push plates singly engaging the slides, means operatively associating the plates to move the latter alternately, electric means to operatethe plate moving means, whereby the slides will be moved singly into display position, shutters adapted to be moved into and out of position before the lenses, means associating the shutters and slide moving means to alternately position the shutters before the lenses, means to move the displayed slides out of position, receiving trays, yieldingly held hingedly mounted plates adapted to engage the displayed slides and transfer the latter to said trays, and means associated with the slide moving means and acting upon the hinged plates to alternately operate the latter.

8. A projecting machine comprising a frame, spaced magazines supported thereby and adapted to contain a plurality of display slides, a lens for each magazine, a lamp for each magazine, push plates singly engaging the slides, means operatively associating the plates to move the latter alternately, electric means to operate the plate moving means, whereby the slides will be moved singly into display position, shutters adapted to be moved into and out of positionbefore the lenses, means associating the shutters and slide moving means to alternately position the shutters before the lenses, means to move the displayed slides out of position, receiving trays, means to transfer the displayed slides to said trays, a dummy slide, a switch for controlling the lamps and the slide moving means and means located in the path of the dummy slide and associated with the switch to actuate the latter and stop the operation of.the machine when the dummy slide is moved. c i

9. In a projecting machine spaced magazines adapted to contain a plurality of display slides, a lens for each magazine, a source of light, push plates singly engaging the slides, means operatively associating the plates to move said plates alternately, a pivotally mounted leverhaving its opposite ends operatively associated with the push plates, a rotatable memberand means operatively associating the rotatable member and lever to operate the push plates and move the slides singly into and out of position.

In testimony whereof I affix my signature.

EMANUEL E. WAGNER. 

